SAE J404 Grade 4140
Equivalent material: DIN 1.7227, DIN 42CrMoS4, AISI 4140, EN 42CrMoS4, EN 1.7227, ASTM Grade B7, ASTM Grade 12, ASTM Grade 7M, UNS G41400, DIN 1.7223, DIN 41CrMo4, AFNOR 42CD4TS, BS 708M40, UNI 41CrMo4, SS 2244, UNE 42CrMo4, AISI 4142, SAE 4142, JIS SNB22, JIS SNB22-1, JIS SNB22-2, JIS SNB22-3, JIS SNB22-4, JIS SNB22-5, EN 1.7223, GOST 40ChFA, GB/T 42CrMoE-1, ASTM 4142, UNS G41420, DIN 1.7225, DIN 42CrMo4, DIN 42CrMo4V, DIN 41CrMo4V, AFNOR 42CD4, BS 709M40, BS EN19, UNI 42CrMo4, UNE F.125, AISI 4140H, AISI 4142H, AISI 4145, AISI NV-7, SAE 4140H, SAE 4142H, SAE 4145, SAE NV-7, JIS SCM440, JIS SCM440M, JIS SCM440H, JIS SNB7, EN 42CrMo4, EN 42CrMo4V, EN 41CrMo4V, EN 1.7225, GOST 38ChM, GB/T 42CrMo, GB/T A30425, ASTM 4140H, ASTM 4142H, ASTM 4145, ASTM Grade B7M, ASTM Grade L7, UNS H41400, UNS H41420, UNS G41450, IS 40Cr1Mo28
SAE J404 Grade 4140 general
| Property |
Temperature |
Value |
Comment |
| Density |
23.0 °C |
Density of 7.8 - 7.9 g/cm³ |
Typical for Chromium Molybdenum Steel |
SAE J404 Grade 4140 thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
23.0 °C |
Coefficient of thermal expansion of 1.1E-5 - 1.4E-5 1/K |
Typical for Chromium Molybdenum Steel |
| Melting point |
- |
Melting point of 1382 - 1529 °C |
Typical for Chromium Molybdenum Steel |
| Specific heat capacity |
23.0 °C |
Specific heat capacity of 448 - 502 J/(kg·K) |
Typical for Chromium Molybdenum Steel |
| Thermal conductivity |
23.0 °C |
Thermal conductivity of 36 - 43 W/(m·K) |
Typical for Chromium Molybdenum Steel |
SAE J404 Grade 4140 chemical
| Property |
Value |
| Carbon |
Carbon of 0.38 - 0.43 % |
| Chromium |
Chromium of 0.8 - 1.1 % |
| Manganese |
Manganese of 0.75 - 1 % |
| Molybdenum |
Molybdenum of 0.15 - 0.25 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 0.15 - 0.35 % |
| Sulfur |
Sulfur of 0.04 % |
SAE J404 Grade 4140 mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
23.0 °C |
Elastic modulus of 200 - 215 GPa |
Typical for Chromium Molybdenum Steel |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Chromium Molybdenum Steel |
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